[FastISel] "Requesting 64-bit offset in 32-bit immediate! failed." #113856
Description
Description
The following code crashes X86 backend with "Requesting 64-bit offset in 32-bit immediate! failed."
Minimal Reproduction
https://godbolt.org/z/KET7GezGa
Code
; llc -mtriple=x86_64 -O=0
@G = global i8 0
define dso_local i32 @main() #0 {
%1 = alloca i32, align 4
%G = getelementptr i8, ptr %1, i32 -2147483648
store i32 0, ptr %G, align 4
ret i32 0
}
Stack Trace
llc: /root/llvm-project/llvm/lib/Target/X86/X86RegisterInfo.cpp:962: virtual bool llvm::X86RegisterInfo::eliminateFrameIndex(llvm::MachineBasicBlock::iterator, int, unsigned int, llvm::RegScavenger*) const: Assertion `(!Is64Bit || isInt<32>((long long)FIOffset + Imm)) && "Requesting 64-bit offset in 32-bit immediate!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/llc -o /app/output.s -x86-asm-syntax=intel -mtriple=x86_64 -O=0 <source>
1. Running pass 'Function Pass Manager' on module '<source>'.
2. Running pass 'Prologue/Epilogue Insertion & Frame Finalization' on function '@main'
#0 0x0000000003ba5b58 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3ba5b58)
#1 0x0000000003ba354c SignalHandler(int) Signals.cpp:0:0
#2 0x00007c1c21642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x00007c1c216969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#4 0x00007c1c21642476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#5 0x00007c1c216287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#6 0x00007c1c2162871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#7 0x00007c1c21639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#8 0x0000000001e7ecb2 llvm::X86RegisterInfo::eliminateFrameIndex(llvm::MachineInstrBundleIterator<llvm::MachineInstr, false>, int, unsigned int, llvm::RegScavenger*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x1e7ecb2)
#9 0x0000000002cca2b0 (anonymous namespace)::PEI::runOnMachineFunction(llvm::MachineFunction&) PrologEpilogInserter.cpp:0:0
#10 0x0000000002b23cc9 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#11 0x000000000311e950 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x311e950)
#12 0x000000000311ed01 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x311ed01)
#13 0x000000000311f5b7 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x311f5b7)
#14 0x000000000086ad7c compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#15 0x0000000000756966 main (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x756966)
#16 0x00007c1c21629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#17 0x00007c1c21629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#18 0x0000000000861a8e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x861a8e)
Program terminated with signal: SIGSEGV
Compiler returned: 139